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[Qemu-devel] [PATCH 06/15] qdev: add qbus_reset_all
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [PATCH 06/15] qdev: add qbus_reset_all |
Date: |
Mon, 17 Dec 2012 17:24:41 +0100 |
Signed-off-by: Paolo Bonzini <address@hidden>
---
hw/qdev-core.h | 12 ++++++++++++
hw/qdev.c | 7 ++++++-
2 files changed, 18 insertions(+), 1 deletion(-)
diff --git a/hw/qdev-core.h b/hw/qdev-core.h
index d672cca..f8bf9dd 100644
--- a/hw/qdev-core.h
+++ b/hw/qdev-core.h
@@ -182,6 +182,18 @@ int qbus_walk_children(BusState *bus, qdev_walkerfn *devfn,
int qdev_walk_children(DeviceState *dev, qdev_walkerfn *devfn,
qbus_walkerfn *busfn, void *opaque);
void qdev_reset_all(DeviceState *dev);
+
+/**
+ * @qbus_reset_all:
+ * @bus: Bus to be reset.
+ *
+ * Reset @bus and perform a bus-level ("hard") reset of all devices connected
+ * to it, including recursive processing of all buses below @bus itself. A
+ * hard reset means that qbus_reset_all will reset all state of the device.
+ * For PCI devices, for example, this will include the base address registers
+ * or configuration space.
+ */
+void qbus_reset_all(BusState *bus);
void qbus_reset_all_fn(void *opaque);
void qbus_free(BusState *bus);
diff --git a/hw/qdev.c b/hw/qdev.c
index 2fdf4ac..87ffad8 100644
--- a/hw/qdev.c
+++ b/hw/qdev.c
@@ -230,10 +230,15 @@ void qdev_reset_all(DeviceState *dev)
qdev_walk_children(dev, qdev_reset_one, qbus_reset_one, NULL);
}
+void qbus_reset_all(BusState *bus)
+{
+ qbus_walk_children(bus, qdev_reset_one, qbus_reset_one, NULL);
+}
+
void qbus_reset_all_fn(void *opaque)
{
BusState *bus = opaque;
- qbus_walk_children(bus, qdev_reset_one, qbus_reset_one, NULL);
+ qbus_reset_all(bus);
}
/* can be used as ->unplug() callback for the simple cases */
--
1.8.0.2
- [Qemu-devel] [PATCH 00/15] qdev: make reset semantics more clear and consistent, reset qbuses under virtio devices, Paolo Bonzini, 2012/12/17
- [Qemu-devel] [PATCH 03/15] pci: clean up resetting of IRQs, Paolo Bonzini, 2012/12/17
- [Qemu-devel] [PATCH 05/15] virtio-s390: add a reset function to virtio-s390 devices, Paolo Bonzini, 2012/12/17
- [Qemu-devel] [PATCH 06/15] qdev: add qbus_reset_all,
Paolo Bonzini <=
- [Qemu-devel] [PATCH 04/15] virtio-pci: reset device before PCI layer, Paolo Bonzini, 2012/12/17
- [Qemu-devel] [PATCH 08/15] lsi: use qbus_reset_all to reset SCSI bus, Paolo Bonzini, 2012/12/17
- [Qemu-devel] [PATCH 07/15] pci: do not export pci_bus_reset, Paolo Bonzini, 2012/12/17
- [Qemu-devel] [PATCH 09/15] qdev: allow both pre- and post-order vists in qdev walking functions, Paolo Bonzini, 2012/12/17
- [Qemu-devel] [PATCH 10/15] qdev: switch reset to post-order, Paolo Bonzini, 2012/12/17
- [Qemu-devel] [PATCH 11/15] qdev: remove device_reset, Paolo Bonzini, 2012/12/17
- [Qemu-devel] [PATCH 15/15] virtio-serial: do not perform bus reset by hand, Paolo Bonzini, 2012/12/17
- [Qemu-devel] [PATCH 14/15] virtio-s390: reset all qbuses too when writing to the status field, Paolo Bonzini, 2012/12/17
- [Qemu-devel] [PATCH 13/15] virtio-pci: reset all qbuses too when writing to the status field, Paolo Bonzini, 2012/12/17